Unfortunately, not always. The answer to this question is not clear-cut, because the simplest testers or chargers can only measure mAh from the charging process. If our charger does not have a dedicated discharge (load) or testing function, its mAh measurement will never be synonymous with the actua ...

A large number of charging standards, standard chargers, slow chargers, fast chargers, Quick Charge, Power Delivery, PPS... You can certainly get lost in the current charging technologies of mobile devices, but it is worth knowing the basic principles of operation as well as the impact of the charge ...

The problem is complex, and the answer is of interest to both users and sellers who face complaints from their customers. We will try to help everyone interested in this topic. ...

When choosing rechargeable batteries, the main criteria for our customers are the capacity, possibly the brand and, of course, the price. It is common knowledge that the higher the capacity of such a battery, the better. Such batteries are also clearly more expensive than potentially weaker/less cap ...

Newly minted users of chargers may have doubts when their new, advanced charger for Ni-MH batteries (popular fingers) is supposed to charge 4 batteries with 1A current, while it is equipped with a power supply with a current capacity of 1A. After all, 4 rechargeable batteries charged with 1A require ...

On the Internet we can find a large number of battery and accumulator tests. Practically every few weeks we can come across a new news, video, or mention of further tests. Often, the winner of one ranking performs very mediocre or even poorly in other tests. What is the reason for such a large dispe ...

When we buy a rechargeable battery with a capacity of 2600 mAh and a certain number of charging cycles of 500, we are convinced that with occasional use we will be able to enjoy its maximum performance for many years. We often treat the given capacity values or the number of charging cycles as guara ...

everActive batteries and rechargeable batteries are subjected to cyclical laboratory tests. In 2022, another test was carried out, performed by a certified research unit - Intertek Semko AB.Intertek Semko AB, located in Sweden, is an elite laboratory dedicated to, m.in the testing of batteries and a ...

Just like last year, we decided to test suspicious rechargeable batteries described as Eneloop Pro, offered through the largest shopping platform in Poland. The price – really "bargain" – over 30% lower compared to the current prices from the official distribution – what could have gone wrong ;) ?La ...

Do you remember our test from a year ago, where we tested "bargain" Eneloop batteries? The products turned out to be counterfeit, with a yield about 25-40% worse than the originals available in our warehouse. We supplement our test with a self-discharge test – measuring capacity after 13 month ...

The capacity of a battery expressed in milliampere-hours (mAh) is the main indicator by which most of us compare individual batteries or rechargeable batteries. Unfortunately, in many cases it is not an ideal unit for assessing the efficiency of a given power source, especially for disposable batte ...

It often happens that when analyzing the technical data of the battery we are interested in, we see, for example, 2 different values of capacity expressed in milliampere-hours - mAh. Why these differences? What is typical, minimum, maximum, nominal, rated capacity? ...

Has it ever happened to you that newly installed batteries or charged rechargeable batteries do not give any sign of life?The basket in which the batteries were installed has started to melt, or maybe there has been a battery spill in the power compartment of your device? In this article, we explain ...

There is currently a rash of different chargers on the market, which, according to the manufacturer's assurance, allow you to measure the mAh capacity of our batteries. Are you sure? In our article, we describe the most common pitfalls, doubts and mistakes made by users when measuring the capacity ...

We point out simple mistakes that often occur, which as a result lead to faster wear of the batteries. Have you ever had new, branded rechargeable batteries last much shorter than they should? Read our guide and perhaps you will avoid disappointment later. ...

The modern everActive battery, which is the equivalent of a typical 9V block battery, has a declared capacity of 500 mAh, but the inquisitive will notice that it consists of two Li-ion cells with a capacity of 500 mAh each.So shouldn't the total capacity of this battery be set at 1000 mAh? ...

Ni-MH rechargeable batteries cause much more problems when assessing the current state of charge than alkaline or Li-ion batteries.While in the case of typical disposable batteries or Li-ion rechargeable batteries, we can orientate the level of charge of the cells and their condition based on the vo ...

As you know from our other publications, 1.2V Ni-MH batteries, in particular the typical R6 (AA) and R03 (AAA) batteries, function very well in most devices, being an ecological and economically justified replacement for disposable 1.5V batteries. On a daily basis, we use devices that tolerate worki ...

Many of you have probably experienced a situation when when trying to charge a small portable device (smart band, smart watch) from your power bank, it is difficult to get 100% charged, and sometimes the power bank turns off after just a few seconds, leaving our device discharged. Why does a typical ...

The problem with alkaline batteries is that in devices with high power consumption, they are very often inefficient and discharge quickly (the voltage drops very quickly) and need to be replaced frequently. Ni-MH batteries, on the other hand, are ideal for devices with high power consumption. Unfort ...